【摘要】 对反式聚环戊烯橡胶（TPR）的合成进行实验研究,确定了催化剂制备及TPR合成工艺条件,对合成的TPR结构进行表征,结果表明:催化剂陈化后具有较高的活性及稳定性,甲苯及正己烷作为环戊烯聚合溶剂均有较好的效果。当催化剂WCl₆用量（相对于环戊烯的质量）为（2.5～3.5）×10^-6 mol/g,分子量调节剂与W物质的量的比为2～3,Al与W的物质的量比为1～3时,单体转化率大于78%,TPR反式结构含量（质量分数）约为85%,玻璃化转变温度小于-92℃,数均相对分子质量在10万～30万之间,相对分子量分布在1.5～2.5之间,满足通用胶的结构及分子量要求。更多还原

【Abstract】 The synthesis of trans-polycyclopentene rubber（TPR） has been studied and the effects of varying the preparation of the tungsten-based catalyst and the polymerization conditions were investigated. The catalyst exhibited high activity and stability after aging. Toluene and n-hexane were suitable solvents for cyclopentene polymerization. When the catalyst loading was（2.5-3.5）×10^-6 molW/g monomer, the molar ratio of molecular weight regulator（n-butene）/W was 2-3 and the triisobutyl-aluminium/W ratio was 1-3, the monomer conversion rate reached a maximum of 78%, the TPR trans-structure content was about 85%, the glass transition temperature was lower than-92 ℃, the number average molecular weight was in the range 100 000-300 000 and the relative molecular mass distribution was in the range 1.5-2.5. These meet the structure and molecular weight requirements for rubber for general.更多还原